Limits...
Detailed structural elucidation of polyesters and acrylates using Fourier transform mass spectrometry.

Simonsick WJ, Petkovska VI - Anal Bioanal Chem (2008)

Bottom Line: Even though soft ionization analyses revolutionized the characterization of large molecules and provided a means for determining the polymer's molecular weight distribution, polydispersity, and end groups, full microstructure elucidation and monomer sequencing by soft ionization alone is not possible.This tool was used in our work to separate and identify the products of polymerization between 12-hydroxystearic acid (HSA) and stearic acid (SA), to provide precise information about the exact location of caprolactones on the Tris(2-hydroxyethyl)isocyanurate (THEIC) molecule, and to sequence a glycidyl methacrylate/methyl methacrylate (GMA/MMA) copolymer.The results highlight the value of ultrahigh resolution and tandem mass spectrometry for fine structural characterization and sequencing of polymers.

View Article: PubMed Central - PubMed

Affiliation: Chestnut Run Plaza, DuPont Fluorochemicals, Wilmington, DE 19880-0711, USA. William.J.Simonsick@usa.dupont.com

ABSTRACT
The detailed structural characterization of complex polymer architectures, like copolymers and polymer mixtures, by mass spectrometry presents a challenge. Even though soft ionization analyses revolutionized the characterization of large molecules and provided a means for determining the polymer's molecular weight distribution, polydispersity, and end groups, full microstructure elucidation and monomer sequencing by soft ionization alone is not possible. The combination of high-resolution Fourier transform mass spectrometry (FTMS) and tandem mass spectrometry (MS(n)) provides a powerful analytical tool for addressing these challenges. This tool was used in our work to separate and identify the products of polymerization between 12-hydroxystearic acid (HSA) and stearic acid (SA), to provide precise information about the exact location of caprolactones on the Tris(2-hydroxyethyl)isocyanurate (THEIC) molecule, and to sequence a glycidyl methacrylate/methyl methacrylate (GMA/MMA) copolymer. The results highlight the value of ultrahigh resolution and tandem mass spectrometry for fine structural characterization and sequencing of polymers.

Show MeSH

Related in: MedlinePlus

Fragmentation pattern in SORI-CID. a GMA pentamer. b GMA/MMA copolymer
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2556801&req=5

Sch4: Fragmentation pattern in SORI-CID. a GMA pentamer. b GMA/MMA copolymer

Mentions: Little backbone cleavage was observed, as shown by the loss of m/z 142 (the weight of GMA) between m/z 591 and 449. However, two losses of glycidyl (m/z = 677, 621) were observed, followed by the loss of water (m/z = 603) to form anhydride. Furthermore, the anhydride loses additional glycidyl groups (m/z 547, 491), followed by another dehydration (Scheme 4a). Thus, the SORI-CID behavior of adjacent GMAs is consecutive losses of m/z 56 followed by dehydration (m/z 18).Scheme 4


Detailed structural elucidation of polyesters and acrylates using Fourier transform mass spectrometry.

Simonsick WJ, Petkovska VI - Anal Bioanal Chem (2008)

Fragmentation pattern in SORI-CID. a GMA pentamer. b GMA/MMA copolymer
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2556801&req=5

Sch4: Fragmentation pattern in SORI-CID. a GMA pentamer. b GMA/MMA copolymer
Mentions: Little backbone cleavage was observed, as shown by the loss of m/z 142 (the weight of GMA) between m/z 591 and 449. However, two losses of glycidyl (m/z = 677, 621) were observed, followed by the loss of water (m/z = 603) to form anhydride. Furthermore, the anhydride loses additional glycidyl groups (m/z 547, 491), followed by another dehydration (Scheme 4a). Thus, the SORI-CID behavior of adjacent GMAs is consecutive losses of m/z 56 followed by dehydration (m/z 18).Scheme 4

Bottom Line: Even though soft ionization analyses revolutionized the characterization of large molecules and provided a means for determining the polymer's molecular weight distribution, polydispersity, and end groups, full microstructure elucidation and monomer sequencing by soft ionization alone is not possible.This tool was used in our work to separate and identify the products of polymerization between 12-hydroxystearic acid (HSA) and stearic acid (SA), to provide precise information about the exact location of caprolactones on the Tris(2-hydroxyethyl)isocyanurate (THEIC) molecule, and to sequence a glycidyl methacrylate/methyl methacrylate (GMA/MMA) copolymer.The results highlight the value of ultrahigh resolution and tandem mass spectrometry for fine structural characterization and sequencing of polymers.

View Article: PubMed Central - PubMed

Affiliation: Chestnut Run Plaza, DuPont Fluorochemicals, Wilmington, DE 19880-0711, USA. William.J.Simonsick@usa.dupont.com

ABSTRACT
The detailed structural characterization of complex polymer architectures, like copolymers and polymer mixtures, by mass spectrometry presents a challenge. Even though soft ionization analyses revolutionized the characterization of large molecules and provided a means for determining the polymer's molecular weight distribution, polydispersity, and end groups, full microstructure elucidation and monomer sequencing by soft ionization alone is not possible. The combination of high-resolution Fourier transform mass spectrometry (FTMS) and tandem mass spectrometry (MS(n)) provides a powerful analytical tool for addressing these challenges. This tool was used in our work to separate and identify the products of polymerization between 12-hydroxystearic acid (HSA) and stearic acid (SA), to provide precise information about the exact location of caprolactones on the Tris(2-hydroxyethyl)isocyanurate (THEIC) molecule, and to sequence a glycidyl methacrylate/methyl methacrylate (GMA/MMA) copolymer. The results highlight the value of ultrahigh resolution and tandem mass spectrometry for fine structural characterization and sequencing of polymers.

Show MeSH
Related in: MedlinePlus